body{font-family:Arial,sans-serif;margin:0;background:#f4f7fb;color:#1f2937} .container{max-width:1100px;margin:auto;padding:24px} .card{background:#fff;border-radius:18px;padding:20px;box-shadow:0 8px 24px rgba(0,0,0,.06)} .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px} input,textarea,select,button{width:100%;box-sizing:border-box;margin:8px 0 14px;padding:12px 14px;border-radius:12px;border:1px solid #d5dbe3;font-size:15px} button{cursor:pointer;background:#2563eb;color:#fff;border:none} button.secondary{background:#111827} a.btn{display:inline-block;background:#2563eb;color:#fff;text-decoration:none;padding:12px 16px;border-radius:12px;margin-right:8px} nav{background:#111827;color:#fff;padding:14px 24px} nav a{color:#fff;text-decoration:none;margin-right:16px} pre{white-space:pre-wrap;background:#0f172a;color:#e5e7eb;padding:16px;border-radius:12px;overflow:auto} table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden} th,td{text-align:left;padding:12px;border-bottom:1px solid #eef2f7} .hero{padding:50px 0 20px} .muted{color:#6b7280}